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The study on the photoinhibiton of Pistachio shows: the exposure of Pistacia vera seedlings to high irradiance induced lowering of apparent quantum yield , maximal fluorescence , minimal fluorescence , variable fluorescence , photochemical efficiency of PS Ⅱ, and photochemical quenching , but raising the Non-photochemical quenching , this indicates that high irradiance reduces the quantities of oxidized Q〓, which depresses the ability of electron transport from Q〓 to Q〓, and lowers the electron transport rate and the photosynthesis rate.

对&光抑制&研究表明，强光照射后，叶片表观量子效率、最大荧光、初始荧光、可变荧光、光化学效率、和光化学猝灭系数下降，而qN升高，说明强光处理降低了Q〓的氧化态数量，使Q〓→Q〓传递电子的能力下降，进而导致了电子传递速率和光合速率的下降。

The strip elements are divided into layers to consider platic zone spreading due to the yield of material at integral points.

考虑材料非线性时运用了Prandtl-Reuss塑性流动法则和等向强化von Mises屈服准则以及塑性增量理论，还可以考虑多种本构关系。

This research utilizes the method of organic synthesis to put different amount of aminophenol into hydroxybenzoic acid or caffeic acid so as to produce a series of high yield of polyhydroxy benzamides (1~40).Through the following different activity tests, discussing the applied value of cosmetics.Ⅰ.

摘要 本研究主要利用有机合成方法，将具有不同数量及在不同位置之羟基取代之安息香酸及咖啡酸分别与胺基苯酚化合物进行醯胺化反应，得到一系列高产率之多酚醯胺类衍生物(1~40)，经由下列不同活性测试方法，探讨其化菻~上的应用价值。

With the wish of a scholarship, he sees an possibleness to be healthy to yield his hometown, along with every his troubles, and verify Sandy with him.

他希望拿到奖学金之后，能够离开家乡，将所有的烦恼抛在脑后，把他的女朋友也带着一起走。

These tests show that: 1. suction decreases with the increase of the water saturation in the chalk; 2. stress variants proposed are available for describing the stress state of the unsaturated chalk; 3. preconsolidation pressure increases with suction, while the effects of suction on the compressibility coefficients λ and κ are not evident; 4. as usual unsaturated soils, the permeability to oil of chalk increases with the suction; 5. yield strength of the chalk behaves with volumetric strain hardening; 6. cohesive behaviour of the chalk is related to the stress level, and relation between time-dependent deformation and logt is linear; 7. cohesion of the chalk decreases with the increase of the suction, while the elastic stiffness and the cohesion coefficient increase; 8. strength and elastic modulus increase with the strain rate, while the strain at the peak strength decreases with the increase of the strain rate.

试验结果表明，白垩中的虹吸力随水饱和度的降低而提高；吸力、水饱和度和强度的变化过程均与时间有关；可用由理论分析得到的应力状态变量描述非饱和白垩的平衡状态；前期固结压力随吸力增加而提高，而压缩指数λ与κ则同吸力无关；应力大于前期固结压力时，粘性变形与时间的对数关系曲线呈线性关系，其大小和增长速率均随吸力减小而增大，可视为白垩弹性刚度降低和粘性系数增大的结果；前期固结压力和变形模量随着应变速率的提高而提高，压缩指数κ和λ则随应变速率的提高而减小；应变速率较低时，粘性和吸力对前期固结压力及压缩指数的影响较小；白垩中油的渗透性随着吸力增加而提高；白垩在屈服阶段具有明显的体积应变硬化特性。

The thesis is divided into two areas: The first area investigated using gold, silver complex to catalyze the cyclization of propargyl alcohol molecules to produced the cyclohexanone products in high yield at room temperature.

题目将分成两个部份：第一个部份主要研究金属金和金属银错合物催化丙炔醇类分子的环化反应，在室温下反应产生高产率之环己酮产物。

As a key step of the synthesis, the Friedel-crafts acylation was researched. And the optimal operation variables were determined through orthogonal experiment: when 0.lmol acetanilide, 0.26mol aluminum chloride, 0.12mol propionyl chloride and 200ml carbon disulfide are introduced, and the reaction time is 5 hour, the yield can be up to 57.3%. The solid super acid catalyst was preliminary studied. Four solid super acid catalysts were prepared to take the place of aluminum chloride, and it was indicated that AlCl3 acidic resin can better catalyze the Friedel-Crafts reaction of acetanilide.

对合成路线中的Friedel-Crafts酰基化反应进行了研究，运用正交实验设计确定了最佳工艺条件：当乙酰苯胺用量为0.1mol时，AlCl_3用量为0.26mol、丙酰氯用量为0.12mol、溶剂用量为200ml、反应时间为5h，产率可达到57.3％；对于固体超强酸催化剂进行了初步研究，合成了四种催化剂，其中负载AlCl_3强酸性树脂对于乙酰苯胺的Friedel-Crafts酰基化具有一定的催化活性。

Alfafa is a kind of high protein pasturage, and its development has very important meanings to increase yield of our proteinic forage and urge the transformation of our agricultural structure from the agriculture-economy binary structure to the ternary agriculture-economy-forage structure.

紫花苜蓿是一种高蛋白牧草，发展紫花苜蓿对于增加我国蛋白饲料产量，促进我国农业结构由&粮—经&的二元种植结构向&粮—经—饲&的三元结构转变具有重要意义。

Berger and other biologists with the Puyallup Tribe of Indians hope the delicate operation on this and dozens of other young fish will yield answers to some pressing questions: Where, exactly, do steelhead go when they leave the rivers that flow to Puget Sound?

Berger和其他生物学家，以及印地安Puyallup部落希望这种在十几条幼鱼身上做的小手术，帮助解答一些迫在眉睫的问题：虹鳟鱼究竟要游向何方？何时离开流向Puget Sound的河流？

The results showed that: the zinc powder could be used to reductively dechlorinate pentachloropyridine to tetrachloropyridine with its yield about 20%. Under the catalytic effect of silver, the dechlorination efficiency of pentachloropyridine was greatly improved.

实验结果表明：反应温度为60 ℃时，单一锌粉能够对五氯吡啶进行还原脱氯生成四氯吡啶，但是收率不高，只有20%左右，在银的催化作用下，四氯吡啶收率得到了很大提高。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失